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A020120 as a simple table

na(n)
01
11
22
34
413
559
6333
72233
817226
9150104
101458150
1115623032
12183012660
132326875240
1431911431854
15469553925839
167378704548889
17123329776031415
182184698889699347
1940885079221516336
20806020133224179177

[1,1,2,4,13,59,333,2233,17226,150104,1458150,
 15623032,183012660,2326875240,31911431854,
 469553925839,7378704548889,123329776031415,
 2184698889699347,40885079221516336,
 806020133224179177]